Blizzard is shaking up its Warcraft-themed digital card game, Hearthstone, with a slew of changes coming this year. Unlike its prior habit of alternating smaller Adventure releases with larger Expansions, 2017 will see three of the latter full-size sets added to the game. But they're also taking away half a dozen cards from the competitive Standard format, including fan favorites Ragnaros the Firelord and Sylvanas. Welcome to the Year of the Mammoth.